We gave the billionaire businessman a Pants on Fire rating for claiming to not to know anything about Duke. But it’s a stretch to say Trump "refuses to denounce the KKK" given his record of denouncements before and after the Tapper interview.

The ad cites a Time article recapping Trump’s Feb. 28 interview on CNN’s State of the Union, where Trump dodged multiple questions from Tapper asking if he’d disavow the support of white supremacist and former KKK leader David Duke (he would later blame a "bad earpiece" for his noncommittal answers).

In a 1991 interview with CNN’s Larry King, Trump said he "hated" what Duke’s success with white voters in a failed bid for the Louisiana governorship represented.

King: "Did the David Duke thing bother you? Fifty-five percent of the whites in Louisiana voted for him."

Trump: "I hate —"

King: "Four hundred New Yorkers contributed."

Trump: "I hate seeing what it represents, but I guess it just shows there's a lot of hostility in this country. There's a tremendous amount of hostility in the United States."

King: "Anger?"

Trump: "It's anger. I mean, that's an anger vote. People are angry about what's happened. People are angry about the jobs. If you look at Louisiana, they're really in deep trouble."

In 2000, Trump declined to run a Reform Party presidential bid in part because the party attracted the support of Duke, a "Klansman."

"This is not company I wish to keep," he said at the time.

Trump also called Duke "a bigot, a racist, a problem," in a 2000 interview with NBC’s Matt Lauer.

Although Trump disavowed Duke and the KKK in the past, his criticism has been less pointed in 2016.

In August 2015, Trump answered a question by Bloomberg’s John Heilemann asking if he would repudiate David Duke’s supportive comments of Trump’s campaign by saying, "I would do that if it made you feel better. I would certainly repudiate."

The story popped up again after Buzzfeed reported on Feb. 25 that Duke was urging his supporters to vote for Trump, saying on his radio show that failure to do so would be "treason to your heritage."

After the interview with Tapper, Trump rejected Duke’s support in interviews on Good Morning America and Morning Joe, calling him a "bad person who I disavowed on numerous occasions over the years."

It’s worth noting that Duke, despite his support for white nationalism and former membership in neo-Nazi and openly racist groups, hasn’t been associated with the Klan for more than 40 years.

Duke founded a Louisiana chapter of the racist group in 1974, but left the organization in 1980 because of its tendency towards violence and his inability to stop members of other chapters from doing "stupid or violent things."

The modern-day Klan is a hodgepodge of dozens of independent chapters spread throughout the country with a total membership around 5,000, according to the Anti-Defamation League.

There’s no central Klan organization that represents every chapter, but Arkansas-based Knights Party spokeswoman Rachel Pendergraft told Politico in December that Trump was a major talking point in the group’s recruitment efforts.

Our ruling

A pro-Rubio super PAC said, "Trump refuses to denounce the KKK."

Trump hasn’t gone after the KKK and white nationalists like Duke with the same fervor as his opponents, but it’s inaccurate to make a blanket statement based on a single interview given his history of rejecting white supremacists.

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